609albert Posted August 31, 2009 Share Posted August 31, 2009 have a HALE 750 gpm fire pump on my 54 mack , the transfer control is stuck ,any ideas on how to free it up, someone said to remove the two 2.5 discharge manifold off and spray rust cutter up in their to free it up. THANKS Quote Link to comment Share on other sites More sharing options...
Firemack Posted August 31, 2009 Share Posted August 31, 2009 Albert,Are you talking about the Pressure Volume transfer valve? Is the valve operator using engine vacuum? If so you also have a manual lever under the pump that operates the valve. Try to operate it manully. You should have a QL75 hale pump, I can check the diagram and let you know if there is any lubrication point for the valve.Firemack Quote Link to comment Share on other sites More sharing options...
609albert Posted September 1, 2009 Author Share Posted September 1, 2009 Albert,Are you talking about the Pressure Volume transfer valve? Is the valve operator using engine vacuum? If so you also have a manual lever under the pump that operates the valve. Try to operate it manully. You should have a QL75 hale pump, I can check the diagram and let you know if there is any lubrication point for the valve.Firemack Quote Link to comment Share on other sites More sharing options...
609albert Posted September 1, 2009 Author Share Posted September 1, 2009 thanks for reply, their is no vaccum unit , the transfer valve is manually operated, the control rod goes through the pump panel to 2 gears that rotate a diverter inside the pump casting , you can only move the knob a half turn , have another mack and the knob goes 3.5 turns to complete the operation of pressure to volumn or visa/versa. thanks, AL Quote Link to comment Share on other sites More sharing options...
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